James g



(No Model.)

J. G. WILSON.

'VENETIAN BLIND. No. 529,770. Patented N07. 27, 1894.

Fig .1; mm. Fig.3.

WITNESSES: V 7 INVENTOR. flw A%/" A; Somea wm ATTORN EY UNITED STATESPATENT OFFIC JAMES G. WILSON-OF NEV YORK, N. Y.

VENETIAN BLIND.

SPECIFICATION forming part of Letters Patent No. 529,770, dated November27, 1894.

Application filed March 6, 1893.

To all whom it mag concern:

Be it known that I, JAMES G. WILSON, a subject of the QueenofGreatBritian, anda resident of New York, in the county and State ofNew York, have invented certain new and useful Improvements in VenetianBlinds, of which the following is a specification.

My invention has reference to improvements in window or other blinds ofthat charactercommonly termed Venetian blinds. In Venetian blindsembodying top bars as hitherto manufactured, the uppermost slat issuspended by short tapes from a supporting bar located at the upper partof the window frame, and from this slat theladders supporting theremaining slats are suspended. This construction complicates thestructure and necessitates the use of a visible and heavy upper slat.The means for raising and lowering the slats hitherto employed consistof two or more cords passing over suitable pulleys in the supportingbar, then down through the slats and placed in connection with thebottom slat. The free end of 'the cords by which the slats are operatedare secured together and rigidly attached to a handle or tassel. Theinherent defects of. this construction are, that unequal shrinkage orelongation of the cords, as well as unequal drawing of the cords, unlessgreat care is exercised, causes the blind to be drawn up unequally atopposite sides.

The objects of my invention are therefore, first, to simplify andimprove the construction of the blind with respect to the arrange-' mentof the slat supporting devices, and secondly, to insure a uniform andregular raising and lowering of the blind.

The nature of my invention will best be understood when described inconnection with the accompanying drawings, in which Figure 1 representsa face view of a Venetian blind embodying my invention. Fig. 2 is an endelevation of the same. Fig. 3 is a detail view of a modified form forthe slat raising cord.

Similar letters of reference indicate corresponding parts throughout theseveral views of the drawings.

In the drawings the lettera designates the slats constituting the blind,which slats are the window framing.

Serial No. 464,864. (No model.)

supported by ladders b of any well known construction.

A is a turning bar located above the top bar 13 and supported 'to turnin suitable brackets c secured to'the top bar, which latter is rigidlysecured in any usual manner to The upper ends of the tapes forming partof the ladders b are secured directly to the (turning bar A, the top barhaving suitable apertures to permit the passage of said tapes. As usualthe turning bar is operated by a suitable cord (1 (Fig. 1) to open andclose the slats, or to set the same at any desired angle.

e is the cord for raising and lowering the slats, the generalarrangement .of which is substantially the same as, usual, it beingguided by suitable pulleys f g h on the top bar and has its ends securedto the bottom slat. However in place of using two cords andsecuring thesame directly and rigidly to a handle or tassel'at their overhangingends, I make use or a continuous cord, and connect the handle, tassel,or other similar device, loosely to the cord. In the example illustrated in Fig. 1, the loose connection of the handle ortassel i with thecord is effected by the use of a small pulley j mounted in said handle.It will be readily understood that if by reason of unequal shrinkage, orany other cause, there should exist a tendency for the slats to raiseunequally, the handle or tassel will accommodate itself to theinequality by achange in position when in the act of raising the blind.Consequently the slats will always retain their horizontal positions andmove freely and easily.

In the form shown inFigs3, the bow of the cord is located higher than inthe previous example and the pulleyj is mounted in a strap j, whichlatter is connected by a cord I with the handle or tassel proper placedwithin.

I wish it to be distinctly understood that I do not restrict myself tothe use of a pulley in connection with the slat raising cord; since itis evident that the handle or tassel can be connected to the same bymeans of astrap or eye fitting loosely about the cord, and thus form theloose connection which is the distinctive feature of my presentinvention. The reason that I prefer to employ the pulley is to reducethe friction and thus cause the handle to accommodate itself veryreadily to changes in the cord. Again, by the term handle or tassel, Ido not wish to restrict myself to such specific devices as are atpresent cornmercially employed in connection with Venetian blinds, sinceit is evident that other devices can be substituted.

What I claim as new, and desire to secure by Letters Patent, is-

l. A Venetian blind having its slats strung upon a single cord passingtwice through the slats in vertical lines and made fast at its ends tothe bottom bar; the middle of the cord forming a laterally overhangingloop or bight, combined with a handle mounted loosely in said loop orbight, substantially as and for the purpose specified.

2. A Venetian blind having its slats strung upon a single cord passingtwice through the slats in vertical lines and made fast at its ends tothe bottom bar, the middle of the cord forming a laterally overhangingloop or bight after passing through the pulleys in the top bar, combinedwith a pulley fall operating in the loop or bight and having attachedthereto a pendentoperatingcord,substantially as and for the purpose setforth.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of "two witnesses, this 41th day of March, 1893'.

JAS. G. WILSON.

WVitnesses:

J As. STANSFIELD, WM. A. KoEDEL.

